PCF2131 datasheet(30/31 Pages) NXP

30 / 31 page

NXP Semiconductors

UM11597

PCF2131-ARD evaluation board

Tables

Tab. 1.

Pin chart of Arduino connectors ........................7

Tab. 2.

I2C/SPI bus selection ........................................8

Tab. 3.

J4 (Aardvark header) pin chart ......................... 9

Tab. 4.

Power supply selection ................................... 12

Tab. 5.

Abbreviations ...................................................27

Figures

Fig. 1.

Evaluation board featured component

location, top view (up) and bottom view

(down) ............................................................... 6

Fig. 2.

PCF2131-ARD daughterboard, I2C/SPI

bus jumper selection ......................................... 8

Fig. 3.

PCF2131-ARD daughterboard, time stamp

section ............................................................. 10

Fig. 4.

PCF2131-ARD daughterboard, J9 section;

RC filter detail ................................................. 10

Fig. 5.

PCF2131-ARD daughterboard, pullup

resistors detail ................................................. 11

Fig. 6.

PCF2131-ARD daughterboard, LDO

regulator section ..............................................11

Fig. 7.

PCF2131-ARD daughterboard, initial

hardware setup ............................................... 13

Fig. 8.

PCF2131-ARD daughterboard and

IMXXRT1050 EVK board, before getting

started ..............................................................14

Fig. 9.

PCF2131-ARD daughterboard /

IMXXRT1050 EVK board, during operation .....15

Fig. 10.

PCF2131-ARD daughterboard and

LPCXpresso55S69 motherboard, before

getting started ................................................. 16

Fig. 11.

PCF2131-ARD daughterboard /

LPCXpresso55S69 motherboard operation .....18

Fig. 12.

The assembly PCF2131-ARD

daughterboard, IMX8MMINI-IARD

interposer board, and i.MX 8M Mini

LPDDR4 EVK, before getting to start .............. 20

Fig. 13.

PCF2131-ARD daughterboard / i.MX 8M

Mini LPDDR4 EVK board operation ................ 21

Fig. 14.

PCF2131-ARD daughterboard connected

to Aardvark I2C / SPI host adapter ................. 22

Fig. 15.

Graphical interface at start-up (“Settings”

tab activated by default) ..................................23

Fig. 16.

Graphical interface – “Registers” tab

activated .......................................................... 24

Fig. 17.

Graphical interface – “Date/Time” tab

activated .......................................................... 24

Fig. 18.

Graphical interface – “Alarm” tab activated ..... 25

Fig. 19.

Graphical interface – “Timestamp” tab

activated .......................................................... 26

Fig. 20.

Graphical interface – “ Watchdog Timer”

tab activated ....................................................26

Fig. 21.

Graphical interface – “Interrupt Mask” tab

activated .......................................................... 27

Fig. 22.

Graphical interface – “PWR/BATT” tab

activated .......................................................... 27

UM11597

All information provided in this document is subject to legal disclaimers.

User manual

Rev. 1.0 — 15 September 2021

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